Tube tool



H. E. M GILL TUBE TOOL April 15 1924.

Filed April 1, 1922 M-win JZWIYE ATTORNEY WITNESS:

Patented Apr. 15, 1924.

PATENT OFFICE.

HARRY E. MCGILL, 0'1? GRAND HAVEN, MICHIGAN.

ruse 1 001..

Application filed April 1, 1922. Serial No. 548,761.

To all who-m it may concern:

Be it known that I, HARRY E. MGGILL, a citizen of the United States, residing at Grand Haven, in the county of Ottawa and State of Michigan, have invented new and useful Improvements in Tube Tools, of which the following is a specification.

My present invention has reference to a combined boiler tube expander and beader.

My object is to produce a tool of this char-' acter which can be successfully employed for expanding and beading a boiler tube at a single operation.

A further object is to produce a tool of this character which can be successfully employed on different sizes of boiler tubes for expanding and beading the same.

Other objects and advantages will present themselves as the nature of the invention better understood, reference being had to the drawings which accompany and which form part of this specification.

In the drawings Figure 1 is a view illustrating the application of the improvement, the boiler tube being in section.

Fig. 2 is an elevation of the improvement looking toward the rib that provides the expanding and beading finger.

Fig. 3 is a sectional view on the line 3-3 of Fig. 2.

Fig. 4.- is a sectional view on the line 4-4: of Fig. 2.

As disclosed by the drawings, 1 make use of a conical member 1 which, at its enlarged end is formed with a reduced tubular extension 2. Both the member 1 and its extension 2 are provided with a longitudinal bore 3 that snugly receives therethrough a cross sectionally rounded rod or shaft 4.

The conical member from its reduced end is provided with a longitudinally ar ranged slot 5 that communicates with its bore 3.

On the shaft 4: there is an outstanding rib which provides what I will term a finger and which is indicated by the numeral 6. The finger has its outer edge arranged at the same inclination as that of the outer face of the conical member 1. The rib is extended outwardly from the shaft 4 a dis tance greater than the depth of the walls provided by the slot 5. The finger is of a width corresponding with the distance be tween the walls of the slot, so that in operation such contacting engagement materially reinforces the said finger.

The finger 6 at its inner and widened end is provided with an outstanding portion in the nature of a head 7, and the said head has its under face provided with a concavity 8, the same being in a line with the outer 'cross sectionally rounded edge of the finger 6. The operation of the improvement will it is thought be perfectly apparent to those skilled in the art to which such inventions relate. The shaft l. is first partly inserted in a boiler tube 9, and thereafter the tubular member is also inserted in the end of the said tube. This movement of the conical member 1 brings the finger 6 of the shaft into the slot 5 of the said member 1. The shaft is rotated and, of course, the tubular member 1 is turned therewith and reciprocated on the shaft to cause a hammering action on the head 7 This action is suggested as shown in Fig. 1 by the tubular member being illustrated in dotted lines in its extended position and in full lines when in contacting engagement with the head. The portion of the tubular member directly opposite that provided with the slot is in contacting engagement with the tube, the outer rounded edge of the finger being also in contact with the tube. The turning of the device readily flares the end of the tube outwardly, and when the said end of the tube is engaged by the wall provided by the concavity in the head 7, the end of the tube will be beaded as will, it is thought, be readily understood.

Having described the claim A tube expander and heater of the character described comprising a cross sectionally rounded rod, a rib arranged longitudinally on the rod intermediate its ends and terminating adjacent one end thereof, a head formed on said rib and having a face invention, I

inwardly disposed to provide a concavity, said rib tapering from the head toward the rod with its outer edge terminating in spaced relation therewith, a conical member 5 slotted longitudinally to a portion of its length to receive the rib and head. and

a reduced extension formed on said member whereby the member may be reciprocated on the rod to cause a hammering action on the head for the purpose specified.

In testimony whereof I affix my signature HARRY E. McGrILL. 

